A book for the schoolboy (or maybe schoolgirl) in us all. It traces the history of codes and ciphers from ancient Greece to the present day and ends with a world-wide Cipher Challenge for which there is a £10,000 reward. If you like maths you'll have endless fun with all the graphs and charts and if you are so inclined you might even be tempted to try to devise an unbreakable code of your own!
(Jenny Baker - bwl 4 July 2000 ) |
